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首页> 外文期刊>Environmental research >Bioaccumulation of emerging organic compounds (perfluoroalkyl substances and halogenated flame retardants) by earthworm in biosolid amended soils
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Bioaccumulation of emerging organic compounds (perfluoroalkyl substances and halogenated flame retardants) by earthworm in biosolid amended soils

机译：bio在生物固体改良土壤中对新兴有机化合物（全氟烷基物质和卤化阻燃剂）的生物富集

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In the present work, the bioaccumulation behavior of 49 target emerging organic compounds (20 perfluoroalkyl substances, PFASs, and 29 halogenated flame retardants, HFRs) was studied in soil invertebrates (Eisenia andrei). Multi species soil systems (MS . 3) were used to assess the fate and the effects associated with the application of four biosolids in agricultural soil on terrestrial soil organisms. Biosolid amendment increased concentrations 1.5-14-fold for PFASs, 1.1-2.4-fold for polybrominated diphenyl ethers, PBDEs, and 1.1-3.6-fold for chlorinated flame retardants, CFRs. Perfluorooctanesulfonate, PFOS, (25%) and BDE-209 (60%) were the predominant PFAS and HFR compounds, respectively, in biosolids-amended soils. Total concentrations (ng/g dry weight) in earthworms from biosolid-amended soils ranged from 9.9 to 101 for PFASs, from 45 to 76 for PBDEs and 0.3-32 for CFRs. Bioaccumulation factors (BAFs) were calculated to evaluate the degree of exposure of pollutants in earthworms. The mean BAF ranged from 2.2 to 198 for PFASs, 0.6-17 for PBDEs and 0.5-20 for CFRs. The relationship of PFAS and PBDE BAFs in earthworms and their log K_(ow) were compared: PFAS BAFs increased while PBDE BAFs declined with increasing log K_(ow) values. The effect of the aging (21 days) on the bioavailability of the pollutants in amended soils was also assessed: the residence time affected differently to the compounds studied.
机译：在目前的工作中，研究了49种目标新兴有机化合物（20种全氟烷基物质，PFAS和29种卤化阻燃剂，HFR）在土壤无脊椎动物（Eisenia andrei）中的生物累积行为。使用多物种土壤系统（MS。3）评估了农业土壤中四种生物固体的施用对陆生土壤生物的命运和影响。生物固体修正剂将PFAS的浓度提高了1.5-14倍，多溴联苯醚PBDEs的浓度提高了1.1-2.4倍，氯化阻燃剂CFR的浓度提高了1.1-3.6倍。在生物固体改良土壤中，全氟辛烷磺酸，全氟辛烷磺酸（25％）和BDE-209（60％）分别是主要的PFAS和HFR化合物。生物固体改良土壤中earth的总浓度（ng / g干重）对于PFAS为9.9至101，对于PBDEs为45至76，对于CFR为0.3-32。计算了生物累积因子（BAF），以评估pollutant中污染物的暴露程度。 PFAS的平均BAF为2.2至198，PBDEs的平均BAF为0.6-17，CFR的平均BAF为0.5-20。比较了worm中PFAS和PBDE BAF与它们的log K_（ow）的关系：随着log K_（ow）值的增加，PFAS BAF增加而PBDE BAF下降。还评估了老化（21天）对污染物在改良土壤中生物利用度的影响：停留时间对所研究化合物的影响不同。

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